
//定位全屏
@mixin allcover {
    position: absolute;
    top: 0;
    right: 0;
}

//transform上下左右居中
@mixin ct {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

//定位上下左右居中
@mixin ctp($width, $height) {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -$height/2;
    margin-left: -$width/2;
}

//flex上下左右剧中
@mixin fct() {
    display: flex;
    justify-content: center;
    align-items: center;
}

//定位上下居中
@mixin tb {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

//flex上下剧中
@mixin ftb {
    display: flex;
    align-items: center;
}

//定位左右居中
@mixin lr {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

//flex左右剧中
@mixin flr() {
    display: flex;
    justify-content: center;
}

//宽高
@mixin wh($width, $height) {
    width: $width;
    height: $height;
}

//字体大小、行高、字体
@mixin ft($size, $line-height) {
    font-size: $size;
    line-height: $line-height;
}

//字体大小，颜色
@mixin sc($size, $color) {
    font-size: $size;
    color: $color;
}

//flex 布局和 子元素 对其方式
@mixin fj($type: space-between) {
    display: flex;
    justify-content: $type;
}

//2倍图、3倍图，默认2倍图
@mixin bg-image($url) {
    background-image: url("./images/"+ $url + "@2x.png");

    @media only screen and (-webkit-min-device-pixel-ratio: 2),
    only screen and (min-device-pixel-ratio: 2) {
        background-image: url("./images/"+ $url + "@3x.png");
    }
}

//多行超出省略号
@mixin ellipsis($line: 2, $line-height: 1.2) {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: $line;
    line-height: $line-height;
}

@mixin modalbg($color-bg: rgba(0, 0, 0, 0.2)) {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: $color-bg;
}

@mixin flex($direction: column, $wrap: nowrap) {
    display: flex;
    flex-direction: $direction;
    flex-wrap: $wrap;
}

@mixin clear() {
    &:after {
        content: '.';
        clear: both;
        display: block;
        width: 0;
        height: 0;
        visibility: hidden;
    }
}
